.box 
{
    width: 100%; 
    height: 100%;
    position: relative;
    img 
    {
        width: 100%; 
        height: 100%;
    }
    .center 
    {
        position: absolute;
        width: 30vw;
        height: 350px;
        background: white;
        left: 750px;
        top: 200px;
        h2 
        {
            text-align: center;
            margin-top: 20px;
        }
        Form 
        {
            width: 17vw;
            margin-top: 20px;
            margin-left: 100px;
        }
        Button 
        {
            width: 100%;
        }
    }
}